... with a sphered seating washer to compensate for misalignment between the support surface in the housing and the shaft. 4. Single direction thrust ... . They must not be subjected to any radial load. 5. Bearing Number 1) 51100, 51101, 51102, 51103, 51104, 51105, 51106, 51107 ... , F7-17M, F8-16M, F8-19M, F9-20M, F10-18M Thrust Ball Bearing